Nozzle for generating microbubbles

Abstract

A nozzle for generating microbubbles includes a nozzle main body provided with a water introduction port for introducing pressurized hot water from the bottom center of the nozzle main body into the main body. A core cylinder provided with an opening in a circumferential face is inserted into the nozzle main body to form a throttle part between an edge part of the bottom outer circumference of the core cylinder and an edge part of the bottom inner circumference of the nozzle main body. A gripper is provided for pulling the core cylinder in the direction opposite to the inserting direction. Hot water passed through the throttle part is introduced into the inner part of the core cylinder through the opening of the circumferential face of the core cylinder and hot water in which microbubbles are generated is ejected to the outside.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a nozzle for generating microbubbles for generating microbubbles in hot water mainly for the purpose of cleaning.[0003]2. Related Background of the Invention[0004]In order to generate microbubbles, some systems are proposed, and, as one of them, there is such a system that hot water dissolving a gas such as air is pressurized, forced to pass through a throttle part and depressurized to enable the dissolved gas to appear as microbubbles in the hot water.[0005]As a nozzle for generating microbubbles using such a throttle part, there is known one having an orifice provided with appropriate numbers of small holes functioning as a throttle part built in the nozzle main body (see, for example, Japanese Patent No. 3762404 (paragraph 0024, FIG. 2)).SUMMARY OF THE INVENTION[0006]In the above conventional nozzle, the small hole provided for the orifice corresponds to the throttle part. When the no...

AI Technical Summary

Benefits of technology

[0008]Therefore, in consideration of the above problem, the present invention aims at providing a nozzle for generating microbubbles that enables the removal to be easily performed even when foreign particles clog the throttle part.

[0011]The above core cylinder is energized by a prescribed energizing force in the inserting direction, and, by constituting the nozzle so that the core cylinder may be moved toward the direction opposite to the inserting direction against the energizing force by the pressure of the hot water introduced from the water introduction port to broaden the space of the throttle part and thereby enable the blocking to be released when the blocking occurs in the throttle part caused by foreign particles and the like, there is no need for periodical disassembly and cleaning of the nozzle, and, even when foreign particles clog the throttle part, they are automatically removed.

[0014]By narrowing the space between the bottom inner face of the nozzle main body and the bottom outer face of the core cylinder from the water introduction port toward the throttle part, it is possible to prevent the pressure lowering of the hot water before the arrival of the hot water at the throttle part.

Problems solved by technology

When the nozzle having such small hole as the throttle part is used for cleaning, in particular, when hot water containing a cleaning agent is circulated, if the removal of foreign particles gotten into the hot water is insufficient, the foreign particle might clog the small hole to block it up.

Since the number of the small holes is supposed to be comparatively small, the blockage of only one to two small holes largely influences the condition of generating microbubbles to result in insufficient generation of microbubbles.

Moreover, such trouble also occurs that the load on the motor of a pump pressurizing the hot water increases to shorten the life of the motor.

In order to eliminate the trouble, it is necessary to disassemble the nozzle and to exchange the orifice or clean the small hole of the orifice, but such disassembly and cleaning can not be easily performed in places where the nozzle is actually used, and the use thereof must be stopped for a long time every cleaning.

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